Ball spline joint slackness measuring method and measuring appar

Details Ball spline joint slackness measuring method and measuring appar Ball spline joint slackness measuring method and measuring appar

1998-10-27

2000-06-27

Noori, Max

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

731181, G01N 300

Patent

active

060792787

ABSTRACT:
Slackness of a ball spline joint which engages a first member of a circular shape and a second member fitted outside of the first member is measured by measuring a displacement of a first measurement point (P1) and a second measurement point (P2). The measurement points are set on the radial line passing through the center of the first member and the center of the spline groove. Using the distances (R1, R2) between the center of the first member and the measurement points (P1, P2), and the displacement amount (A1, A2) of the measurement points (P1, P2) under a predetermined relative torque, the slackness of the joint is calculated. By arranging the measurement points (P1, P2) on either side of the center of the first member, the effect of measurement error in the displacement amount (A1, A2) on the calculation is reduced.

REFERENCES:
patent: 4695170 (1987-09-01), Teramachi

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